Cloud computing tutorial learning course syllabus courseware: Disk Array RAID:
RAID 0 0 overall linear volume, a simultaneous drive to read and write data, read and write high speed, but does not support fault tolerance, redundancy is not provided. It requires two hard disks.
RAID 1 mirrored volume, two hard drives in a data write, space usage is 50% support for fault tolerance. It requires two hard disks.
RAID 5 requires three or more hard drives, hard disk space usage rate 2 space. Fault Tolerance Support
RAID 10 is RAID0 and RAID1 integrated application.
RAID 0 RAID0_single single disc only need a dish, do not support fault tolerance, does not provide redundancy. Common to the new server, only one disk, to install the operating system
RAID1 + two RAID5 disk before doing the latter do RAID5 disk RAID1
RAID1 + SSD_RAID5 two before doing the back plate is made raid5 RAID1 SSD drive for storing data
RAID disk array
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RAID: redundant array of inexpensive disks (Redundant Array of Independent Disks)
Action: fault tolerance, enhance the rate of read and write
The number of types of utilization of the advantages and disadvantages RAID
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RAID0 stripe reader set to 100% 2+ fastest rate, no fault tolerance
2 50% RAID1 mirror set read and write rates in general, fault tolerance
RAID5 with parity stripe sets 3+ (n-1) / n fast read and write speeds, fault-tolerant, allowing a bad
RAID6 stripe sets with parity check bis dp 4+ (n-2) / n read fast, fault tolerant, allowing two bad
RAID01
Security RAID10 RAID1 + 450% high speed read and write rates RAID0 fast, fault tolerance
RAID50 RAID5 security + RAID0 speed 6 (n-2) / n read rate is fast, fault tolerance
RAID60 RAID6 safety + RAID0 speed 8 (n-4) / n read rate is fast, fault tolerance